Why Raspberry PI 3 GPIO 'not available' in Node-RED?

Third party integrations Node-RED
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Dear Friends,

I am very new to this HA and Node-RED and this forum also.
I am learning and doing some simple test during this lock-downs.

Why Raspberry PI 3 GPIO “not available” in Node-RED?
Pls guide me.

HA-issue1

P.S. I am using the Hass OS 32 Bit.

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any help pls?

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First Topic when searching gpio nodered:

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